Ginkgo Petrified Forest – Wanapum State Park is a stunning National Natural Landmark located along the shores of Wanapum Lake near Vantage, Washington, surrounded by dramatic basalt cliffs and sweeping sagebrush landscape. The campground at the Wanapum Recreation Area offers a lush, shaded oasis with full hookup sites featuring electrical, water, and sewer connections, pull-through availability for big rigs, a dump station, and accessible restrooms with toilets and picnic tables. Leashed pets are welcome throughout the park. Beyond the campground, the park delivers remarkable geological history — the Trees of Stone Interpretive Trail winds 1.25 miles through petrified wood left in its original setting, a legacy of ancient Ice Age floods that shaped the Columbia Basin. Hikers can explore over 3 miles of trails, while Wanapum Lake beckons with a boat launch, sandy beach, swimming, and fishing. Grills and picnic tables are available for outdoor gatherings. A visitor interpretive center provides educational displays on the region's unique geology and natural heritage. Situated in central Washington along the Columbia River corridor, this park is an ideal basecamp for RV travelers seeking a rare blend of geologic wonder, water recreation, and High Desert scenery.